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                [Apio2012]kunai                </h1>
                <p>时间限制：10s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
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                                <h3>题目描述</h3><p><p><img alt="" src="../file/2810_0.jpg" /></p>
<p></p></p><hr/><h3>输入格式</h3><p><p>从标准输入读入数据。 <br />
第一行包含两个被空格隔开的整数&nbsp;W, H，表示广场的尺寸为W列H行。 <br />
第二行包含一个整数N，表示忍者的数量。 <br />
接下来N行中，第&nbsp;i行有三个以空格分隔的整数&nbsp;X<br />
i,Yi, D i, 表示第i个忍者处在从左往右的&nbsp;X<br />
i列、从上往下的第Yi行，任何两个忍者不在同一个位置。第i个忍者面向的方向由Di</p>
<p>Di = 0，表示忍者向右； <br />
Di = 1，表示忍者向上； <br />
Di = 2，表示忍者向左； <br />
Di = 3，表示忍者向下。</p>
<p></p></p><hr/><h3>输出格式</h3><p><p class="MsoNormal" align="left" style="margin: 0cm -3pt 0pt 42pt; line-height: 13.75pt; text-align: left; mso-line-height-rule: exactly; mso-layout-grid-align: none; tab-stops: 323.2pt 351.65pt 363.25pt"><span style="font-size: 12pt; color: black; font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'">输出一个整数，表示经过足够长的时间之后，在这个</span><font face="Times New Roman"><i style="mso-bidi-font-style: normal"><span lang="EN-US" style="font-size: 12pt; color: black; mso-font-kerning: 0pt"><span style="mso-tab-count: 1">&nbsp; </span>W</span></i><span lang="EN-US" style="font-size: 12pt; color: black; mso-font-kerning: 0pt"> <i style="mso-bidi-font-style: normal"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </span>H</i></span></font><span lang="EN-US" style="font-size: 12pt; color: black; font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><span style="mso-tab-count: 1"> </span></span><span style="font-size: 12pt; color: black; font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'">的广场中被苦</span><span style="font-size: 12pt; color: black; font-family: 宋体; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'">无经过被苦无经过的格子数量。</span><span lang="EN-US" style="font-size: 12pt; color: black; mso-font-kerning: 0pt"><font face="Times New Roman"> <o:p></o:p></font></span></p>
<p></p></p><hr/><h3>样例输入</h3><pre>5  4
5 
3  3 2
3  2 0
4  2 2
5  4 1
1  1 3
 
 
</pre><hr/><h3>样例输出</h3><pre>11 
</pre><hr/><h3>提示</h3><p><p>1&nbsp; &le;N &le; 100,000 忍者数；<br />
&nbsp;<br />
1&nbsp; &le;W &le; 1,000,000,000 列数； <br />
&nbsp;<br />
1&nbsp; &le;H &le; 1,000,000,000 行数； <br />
1&nbsp; &le;Xi &le; W，1 &le; Yi &le; H 坐标范围。<br />
&nbsp;</p></p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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